Waxy coatings, such as those found on skin, hair, and feathers of some animals and the cuticle of some plants, are
commonly used by living organisms for protection against water loss and for lubrication. Such waxes are considered to be
a type of ____.
a. triglyceride
b. steroid
c. neutral lipid
d. phospholipid
e. fatty acid
ANSWER: c
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Which of the following are effective treatments for some allergic reactions?
I) antihistamines II) epinephrine III) corticosteroids A) only I and III B) only II and III C) only I and IIII D) I, II, and III
Epinephrine is an example of _____
A) an androgen B) an estrogen C) a progestin D) a catecholamine E) a glucocorticoid
Which of the following is an example of an inherited characteristic?
a. a suntan b. weight gain c. dimples d. a mohawk hairstyle
What kind of enzyme attaches a chain of proteins to other proteins that have been targeted for degradation, thus ensuring their destruction in a proteasome?
a) ubiquitin duplicitase b) ubiquitinase c) protease d) ubiquitin ligase